发明名称 Three-piece optical pickup lens
摘要 A three-piece optical pickup lens includes, sequentially from an object side to an image side of the three-piece optical pickup lens along an optical axis thereof, an aperture stop, a first lens, a second lens, and a third lens. The first lens is a meniscus lens of positive refractive power. The second lens has an object side and an image side, on each of which at least one inflection point is formed at a position located between a center and a periphery of the second lens. The third lens has an object side and an image side, on each of which at least one inflection point is formed at a position located between a center and a periphery of the third lens, and has positive refractive power at paraxial region of optical axis.
申请公布号 US8339715(B2) 申请公布日期 2012.12.25
申请号 US201113018977 申请日期 2011.02.01
申请人 SHIH BO-YUAN;SHYU SAN-WOEI;E-PIN OPTICAL INDUSTRY CO., LTD. 发明人 SHIH BO-YUAN;SHYU SAN-WOEI
分类号 G02B13/18;G02B3/02;G02B9/14 主分类号 G02B13/18
代理机构 代理人
主权项
地址